100-199 Assets and other debits.
200-299 Liabilities and other credits.
300-399 Plant accounts.
400-432, 434-435 Income accounts.
433, 436-439 Retained earnings accounts.
440-459 Revenue accounts.
500-599 Production, transmission, and distribution expenses.
900-949 Customer accounts, customer service and informational, sales, and general and administrative expenses.
Note: The purpose of this instruction is to insure that accounts or records are currently maintained by each borrower from which reports may be made to RUS for use in determining the net investment in each licensed project. The instruction covers only the debit and credit items appearing in the borrower's accounts which may be identified with and assigned directly to any project. In the determination of the net investment, allocations of items affecting the net investment may be required where direct assignment is not practicable.
7 C.F.R. §1767.15